<template>
  <div>
      <el-card>
          <!-- 2:为echarts准备一个具备大小(宽高的DOM -->
          <div id="main" style="width:600px;height:400px"></div>
      </el-card>
  </div>
</template>

<script>
// 1:导入echart依赖
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
  data () {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created () {},
  // 此时页面上的元素，已经被渲染完毕了
  async mounted () {
    //   3：基于转备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))

    const { data: res } = await this.$http.get('reports/type/1')

    const result = _.merge(res.data, this.options)

    // 4:准备数据项和配置
    // myChart.setOption({
    //   title: {
    //     text: 'ECharts 入门示例'
    //   },
    //   tooltip: {},
    //   xAxis: {
    //     data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
    //   },
    //   yAxis: {},
    //   series: [
    //     {
    //       name: '销量',
    //       type: 'bar',
    //       data: [5, 20, 36, 10, 10, 20]
    //     }
    //   ]
    // })
    myChart.setOption(result)
  }

}
</script>

<style>
</style>
